Assignee
- Japan Oil, Gas And Metals National
- Inpex
- Jx Nippon Oil & Energy
- Japan Petroleum Exploration Co.
- Cosmo Oil Co.
- NS Sumikin Engineering
- Chiyoda
Inventors
- Shuhei Wakamatsu (12 patents)
- Fuyuki Yagi (15 patents)
- Tomoyuki Mikuriya (7 patents)
- Kenichi Kawazuishi (14 patents)